# JJazzLab 5

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![JJazzlab 5](https://1057949908-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MQE7B7yjVY3xzlsorS4-887967055%2Fuploads%2FZC6grmjN0CBytQHgryv1%2FJJazzLabFullScreen.png?alt=media\&token=ef1aa48e-1625-460f-9854-a89eb01910d7)

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In JJazzLab "**rhythm**" usually means a **music style**, like pop or bossa-nova.
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## What is JJazzLab?

🎵 JJazzLab lets you create backing tracks for any song, even complex ones, in just a few minutes. It’s a jam buddy to have fun practicing at home or learn new stuff. It’s also a great tool for teaching or early-stage composing.

🎷 Add variety, rhythmic accents and natural dynamics that keep your practice sessions inspiring. You can start a solo slowly and gradually build up the atmosphere!

💻 JJazzLab is free and open-source, with an open architecture: anyone can easily add new features and new music generation capabilities.

## Getting started

[Install ](https://jjazzlab.gitbook.io/user-guide/installation)and run JJazzLab, then :

1. Load an example song file : **menu File/Open Songs...** and select **ExampleFiles/BluesMinor.sng**
2. Press the **Play** button : you should hear the backing track -if not, check the Midi Out device in **menu Tools/Options (Preferences on Mac)**
3. Start editing the song using the [**editors** ](https://jjazzlab.gitbook.io/user-guide/editors/overview)and hear how it impacts the generated backing track.

If you prefer to quickly create a new backing track from scratch, check out this video:

{% embed url="<https://www.youtube.com/watch?v=AkOm8l5Xb1g>" %}

## Key features

* New [**jjSwing style**](https://jjazzlab.gitbook.io/user-guide/rhythm-engines/jjswing-rhythm-engine) (rhythm), practice jazz standards with the best walking bass and drums
* Hundreds of ready-to-use music styles ([rhythms](https://jjazzlab.gitbook.io/user-guide/rhythms/rhythm-files)) available
* Introduce **dynamics** and **variety** in just a few clicks, for example:
  * mute the guitar in the intro
  * add a break at the end of the 2nd verse and congas in the 3rd verse
  * boost intensity and slightly increase tempo at the end
  * add anticipated (pushed) chords
  * simplify the piano on the first verse
* Add [user tracks](https://jjazzlab.gitbook.io/user-guide/editors/mix-console#user-tracks) to customize your backing track
* Attach [annotations or lyrics](https://jjazzlab.gitbook.io/user-guide/editors/chord-lead-sheet#bar-annotations-lyrics) to bars
* Control [playback via Midi](https://jjazzlab.gitbook.io/user-guide/playback-control/midi-remote-commands)
* [Import](https://jjazzlab.gitbook.io/user-guide/songs/importing-songs) and [export](https://jjazzlab.gitbook.io/user-guide/songs/exporting-songs) song or individual instrument tracks

## **Side tools**

* [Chord inspector](https://jjazzlab.gitbook.io/user-guide/tools/notes-viewer): understand chord symbol notes and scales (piano, guitar diagrams, score)
* [Practice loop with tempo auto-increase](https://jjazzlab.gitbook.io/user-guide/tools/practice-loop-with-tempo-increase): efficiently practice exercices or difficult passages
* [Arranger keyboard mode](https://jjazzlab.gitbook.io/user-guide/tools/arranger-keyboard-mode): control backing track chords via a midi keyboard
* [Improvisation help](https://jjazzlab.gitbook.io/user-guide/tools/improvisation-help): get improvisation guides for your lead sheet
* [Chord symbols transposition](https://jjazzlab.gitbook.io/user-guide/tools/chord-symbols-transposition): for transposing instruments (e.g. sax players)
* [Easy Reader window](https://jjazzlab.gitbook.io/user-guide/tools/easy-reader): focus on the current and next chord
* [Song memo](https://jjazzlab.gitbook.io/user-guide/tools/song-memo): text reminders about your song which can include links to files or web pages


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